The problems becomes worse in persons with disroders that impair sweating, such as hypohidriotic extodermal dysplasia, who may develop hyperthermia after even moderate exercise. Even if the sweat glands are intact, dysfunction of the neurologic pathways that control sweating (including anticholinergic agents and sympathectomy) may impair heat loss and result in hyperthermia.
Pediatric Diagnostic Examination
Donald Greydanus, Arthur N Feinberg, Dilip R Patel, Douglas N Homnick
page: 49